It shows emergency calls only once i go out of my wifi coverage.
It basically means no sim card installed as the signal bars above are that of the signal strength with the nearby tower irrespective that whether sim is there or not.
Kindly reset factory data with backup again then try to it's again. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
As per your concern, you have already done the possible troubleshooting steps and the issue remains unresolved, we kindly request that you visit our service center. Our technical team will be able to inspect your device physically and provide you with detailed information and assistance.
